Script check the index fragmentation in SQL Server

Today I had a need to find the index fragmentation on one of my sql server database and I found this script buried on my computer, thought I will share it here:

DECLARE @DatabaseID int

SET @DatabaseID = DB_ID()

SELECT DB_NAME(@DatabaseID) AS DatabaseName,
schemas.[name] AS SchemaName,
objects.[name] AS ObjectName,
indexes.[name] AS IndexName,
objects.type_desc AS ObjectType,
indexes.type_desc AS IndexType,
dm_db_index_physical_stats.partition_number AS PartitionNumber,
dm_db_index_physical_stats.page_count AS [PageCount],
dm_db_index_physical_stats.avg_fragmentation_in_percent AS AvgFragmentationInPercent
FROM sys.dm_db_index_physical_stats (@DatabaseID, NULL, NULL, NULL, ‘LIMITED’) dm_db_index_physical_stats
INNER JOIN sys.indexes indexes ON dm_db_index_physical_stats.[object_id] = indexes.[object_id] AND dm_db_index_physical_stats.index_id = indexes.index_id
INNER JOIN sys.objects objects ON indexes.[object_id] = objects.[object_id]
INNER JOIN sys.schemas schemas ON objects.[schema_id] = schemas.[schema_id]
WHERE objects.[type] IN(‘U’,’V’)
AND objects.is_ms_shipped = 0
AND indexes.[type] IN(1,2,3,4)
AND indexes.is_disabled = 0
AND indexes.is_hypothetical = 0
AND dm_db_index_physical_stats.alloc_unit_type_desc = ‘IN_ROW_DATA’
AND dm_db_index_physical_stats.index_level = 0
AND dm_db_index_physical_stats.page_count >= 1000

Best practice, you rebuild the index if the fragmentation is more than 40 % , if not a reorganization will suffice.